Recycling of Waste PET into Useful Alkyd Resin Synthesis by Microwave Irradiation and Applied in Textile Printing

2014 ◽  
Vol 18 (1) ◽  
pp. 80-88 ◽  
Author(s):  
K. Haggag ◽  
N.S. Elshemy ◽  
W. Niazy
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Microwave Irradiation ◽  
Oil Content ◽  
Acid Value ◽  
Fastness Properties ◽  
Alkyd Resins ◽  
Textile Printing ◽  
Modified Binder ◽  
Better Than

Modified alkyd resins with different amounts of vegetable oil contents (sunflower oil) and different catalysts are synthesized with the incorporation of post-consumer polyethylene terephthalate (PET) as a partial substitute for phthalic anhydride. It is found that the properties of the products obtained are directly related to the oil content. The polymerization reactions are followed by the acid value. The modified binder contains 50% oil and 10% PET in the presence of LiOH as the catalyst by using microwave irradiation. The AV value is attained in a short amount of time; it is found that the glass Transition Temperature (Tg) of the modified binder is -1.7 °C. The stiffness and roughness of the printed fabrics by using the modified binder are better than those of the commercial binder for both cotton and cotton/polyester fabrics. Moreover, it is clear that the overall fastness properties of the fabrics printed by using the modified binder in the formulation of printing pastes are higher or comparable to those that use commercial binders.

A Copolymerization Modified Acrylate Resin and its Polyhedral Oligomeric Silsesquioxane Composites

2014 ◽  
Vol 887-888 ◽  
pp. 97-100
Author(s):  
Xiao Lan Hu ◽  
Xi Lan ◽  
Teng Fei Lu ◽  
Hong Shan Yang ◽  
Ying Lai Yang
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Glass Transition Temperatures ◽  
Acrylate Copolymer ◽  
Amino Resin ◽  
Acrylate Resin ◽  
Oligomeric Silsesquioxane ◽  
Physical Blending ◽  
Better Than

An acrylate resin copolymerized with epoxy and amino resin was prepared in this paper, and its polyhedral oligomeric silsesquioxane (POSS) modified nanocomposites were fabricated via physical blending. Results showed that glass transition temperature of the acrylate copolymer was about 7.9 oC via DSC. Dispersion of nanocomposites with aminopropyllsobutyl POSS is better than those with Octalsobutyl POSS. Moreover, glass transition temperatures of the nanocomposites with POSS are close to the acrylate copolymer matrix.

scholarly journals Synthesis and Characterization of Polyesteramide Hot Melt Adhesive from Low Purity Dimer Acid, Ethylenediamine, and Ethanolamine

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Pravin G. Kadam ◽  
Parth Vaidya ◽  
Shashank T. Mhaske
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Acid Value ◽  
Peel Strength ◽  
Partial Replacement ◽  
Adhesion Properties ◽  
Dimer Acid ◽  
Lap Shear ◽  
Hot Melt

Polyesteramide hot melt adhesive (HMA) was synthesized using low purity dimer acid (composition: 3% linoleic acid, 75% dimer acid, and 22% trimer acid), ethanolamine, and ethylenediamine. Ethanolamine was added as a partial replacement (10, 20, and 30%) of ethylenediamine. Prepared HMAs were characterized for acid value, amine value, hydroxyl value, Fourier transform infrared spectroscopy, mechanical (tensile strength, percentage strain at brea, and shore D hardness), thermal (glass transition temperature, melting temperature, enthalpy of melting, crystallization temperature, and enthalpy of crystallization), rheological (viscosity versus shear rate and viscosity versus time), and adhesion properties (T-peel strength and lap shear strength). Replacement of ethylenediamine by ethanolamine replaced certain amide linkages by ester linkages, decreasing the intermolecular hydrogen bonding, leading to decrease in the crystallinity of the material, and thus the mechanical, thermal, adhesion, and rheological properties. However, HMAs prepared using ethanolamine will have better low temperature flexibility due to low glass transition temperature and better adhesion process due to the lower viscosity.

Application of ionic liquid [bmim]PF6 as green plasticizer for poly(L-lactide)

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Puyu Zhang ◽  
Lichao Peng ◽  
Wenbin Li
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Ionic Liquid ◽  
Glass Transition ◽  
Transition Temperature ◽  
Poly Ethylene Glycol ◽  
Scanning Calorimetry ◽  
Poly Ethylene ◽  
Thermal Stability Of ◽  
Better Than

AbstractIonic liquid [bmim]PF6 (1-butyl-3-methylimidazolium hexafluoro phosphate) was synthesized and characterized. It was used as the plasticizer for poly(L-lactide) (PLLA). The glass transition temperature (Tg) and the thermal stability of the plasticized PLLA samples were measured by thermogravimetry (TG) and differential scanning calorimetry (DSC). Compared with poly(ethylene glycol) having Mw of 300 g/mol (PEG300), TG results showed that the thermal stability of PLLA plasticized with ionic liquid was better than that of PLLA plasticized with PEG300. The Tg of plasticized PLLA decrease with increasing the content of ionic liquid [bmim]PF6 from 2 wt.% to 10 wt.%. The Tg of PLLA can be reduced to 40°C when the content of ionic liquid [bmim]PF6 was 10 wt.%. The materials of PLLA with plasticizer were also investigated using polarizing microscope (POM), the results of which indicate that the movements of PLLA chains were improved when ionic liquid plasticizer was used.

Plasticizing of isotactic polypropylene upon addition of hydrocarbon oils

e-Polymers ◽  
2004 ◽  
Vol 4 (1) ◽  
Author(s):  
Koh-hei Nitta ◽  
Hidetaka Ando ◽  
Takuo Asami
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Oil Content ◽  
Amorphous Region ◽  
Elongation At Break ◽  
Measurement Temperature ◽  
Oil Blends ◽  
The Difference ◽  
Hydrocarbon Oil

Abstract The effect of the addition of hydrocarbon oil on the mechanical behaviour of isotactic polypropylenes (iPPs) was examined. It was found that the oil molecules are completely dissolved in the amorphous region of iPP so that the blending lowers the glass transition temperature, Tg, of iPP. As a result, Young’s modulus of iPP/oil blends is dominated by the difference between the measurement temperature and Tg (ΔTg = T - Tg), independent of the oil content. The elongation at break is proportional to ΔTg, while the strength at break increases linearly with increasing tie-molecule fraction (which increases with decreasing oil content), being independent of ΔTg.

scholarly journals Characterization of Glassy TeO2 and Binary Potassium and Boron Tellurites

2020 ◽  
pp. 283-286
Author(s):  
Ms Megha ◽  
Ms Mansi
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Raman Spectra ◽  
Tellurite Glasses ◽  
Mid Infrared ◽  
Infrared Optics ◽  
Single Part ◽  
Better Than

<p>Tellurite glasses show potential for use in mid-infrared optical applications1, yet their structure has not been seriously contemplated. While they don't lead light better than chalcogenides, which are as of now the best glasses for infrared optics, they are a lot simpler to create. Potassium and boron tellurite glasses, including single part, quickly cooled TeO2, are accounted for and concentrated here. The outcomes incorporate the Glass Transition Temperature (Tg) estimations and Raman spectra. Proposed auxiliary models are additionally examined.</p>

Study of PVC Plasticized by Octodecyl Acyl Tributyl Citrate

2011 ◽  
Vol 233-235 ◽  
pp. 2778-2784
Author(s):  
Jin Feng Cui ◽  
Jun Hong Guo ◽  
Yong Qiang Ma ◽  
Yan Hua Li ◽  
Cai Xia Qing ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Low Temperature ◽  
Thermal Behavior ◽  
Breaking Strength ◽  
Elongation At Break ◽  
Temperature Impact ◽  
Two Phases ◽  
Better Than

The PVC composite was prepared by extrusion melt using a new plasticizer octodecyl acyl tributyl citrate and PVC resin. Influence on mechanical and resistance to cold properties of PVC was studied by tensile and low temperature impact tests. The thermal behavior, texture and mechanism of plasticizing of OTBC plastifying PVC were supported by TG, DSC and SEM. The result indicated that the glass transition temperature of plastifying material was about 36°C, breaking strength was 25.3MPa, elongation at break was 250% and, plasicizing efficiency was 0.88, resistance to cold property better than plastifying material of DOP’s, domains between two phases of micro-texture were small and distributed homogeneously when OTBC content in PVC resin was 30%.

Rheology of Selected Persian Honeys

2010 ◽  
Vol 6 (3) ◽  
Author(s):  
Hamid Tavakolipour ◽  
Ahmad Kalbasi Ashtari
Keyword(s):  
Activation Energy ◽  
Glass Transition ◽  
Transition Temperature ◽  
Water Content ◽  
Exponential Model ◽  
Temperature Data ◽  
Arrhenius Model ◽  
Better Than ◽  
Glass Viscosity ◽  
Newtonian Behavior

The rheological properties of two types of Persian honeys (Thyme and Shahjahan) were studied over temperature and water content of 10-30°C and 16.8-17.2%, respectively. At these conditions, they exhibited a Newtonian behavior for shear rate in range of 0-100 and apparent viscosity in range of 6.7 and 150 Pa.s. The activation energy, glass transition temperature and glass viscosity of Thyme and Shahjahan honeys were (104.5 and 109.7 kJ/mol), (225.6 and 228.2K), and (1.68 x 1011 and 1.48 x 1011 Pa.s), respectively. The Williams-Landel-Ferry (WLF) and Arrhenius Models used to check the dependency of viscosity and temperature data. The results showed that Thyme and Shahjahan honeys were fitted with WLF much better than Arrhenius model. However, the viscosity and water content data did not match with exponential model of Zaitoun, and the viscosity decreased with water content due to its plasticizing effect.

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